Circular saw



FIG. 1 is a front perspective view of a circular saw showing my design;

FIG. 2 is a left side view thereof;

FIG. 3 is a right side view thereof;

FIG. 4 is a top plan view thereof;

FIG. 5 is a bottom plan view thereof;

FIG. 6 is a front side view thereof; and,

FIG. 7 is a back side view thereof.

Features shown in dashed lines are for illustrative purposes only, and form no part of the claimed design.

The shade lines in the Figures show contour and not surface ornamentation, and form no part of the claimed design. 

CLAIM I claim the ornamental design for a circular saw, substantially as shown and described. 